People tend to use smart apps on their TV for the major streamers and when built in Netflix no longer works people get a new TV.
I have a 720P 32" TV in my room because I still play 720P content like XBOX and DVD's on it plus OTA broadcasts that are 720P or 1080i. The TV in the Livingroom is a 55" 4K smart TV that has never seen 4K content.
For LCD stand alone computer monitors I have 1024x768 (17") 1280x1024 (19"), 1680x 1050 (22"?), 1980x1024 (23 and 24"). 1080P gaming is just fine for me same with general computer work. Old school computers are best on a CRT where one of my 14", 15", 17", or 19" screens can display whatever low resolution is needed at a flicker free frequency. My old school consoles get connected to my 27" Panasonic TV. I also have a high end Panasonic 27" flat screen CRT TV with perfect black that needs fixed. That TV had picture in picture and S-Video in both in front and back making console gaming easy. Never bothered to fix it because I have other options nor junked it because it is 100 lbs. and probably easy to fix when I need to. I also have one of those old SONY CRT Pro video monitors to show output from my old analog video editing gear.
When I was younger, I kept upgrading CRT monitors because I wanted higher resolution plus a better dot pitch and refresh rate at least until I hit 19" and anything above that was too heavy for my particle board computer desks and also the back end needed too much overhang. To be honest playing an old 320x240 CGA game on a 14" monitor was just fine, same as watching a VHS tape on a 27" CRT TV. I should connect a VHS VCR to the 4K TV (I think it has a RCA in) just to see how good the built in scaler is on it, but I assume it would look like crap.
Collector of old computers, hardware, and software